I was kayaking today in central florida and came across what appeared to me to be about a 2 inch killifish with a blue tail. the tail was so colorful it really stood out to me. I tried to catch one to get a closer look, but i never could catch one as they were very fast, and were in silt-like soil areas of the river. Is there any species of killi or otherwise that this sounds like? it had a body shaped like killis. I almost thought that maybe they were released by someone but i saw too many in too many areas for it to be a fluke. thanks